#include <mc9s12dp512.h>
void main(void)
  {			
    char mynum[]= {+1,-1,+2,-2,+3,-3,+4,-4};
    unsigned char z;
    DDRB = 0xFF;			
    for(z=0;z<8;z++)
      PORTB = mynum[z];
    while(1);			
  }